<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>数据统计</el-breadcrumb-item>
      <el-breadcrumb-item>数据报表</el-breadcrumb-item>
    </el-breadcrumb>

    <el-card>
      <!-- 2. 为 ECharts 准备一个具备大小（宽高）的 DOM -->
      <div id="main" style="width: 800px;height: 400px;"></div>
    </el-card>
  </div>
</template>
<script>
// 1. 导入echarts
import echarts from "echarts";
import _ from 'lodash'

export default {
  data() {
    return {
      // 需要合并的配置数据对象
      options: {
        title: {
          text: "用户来源"
        },
        tooltip: {
          trigger: "axis",
          axisPointer: {
            type: "cross",
            label: {
              backgroundColor: "#E9EEF3"
            }
          }
        },
        grid: {
          left: "3%",
          right: "4%",
          bottom: "3%",
          containLabel: true
        },
        xAxis: [
          {
            boundaryGap: false
          }
        ],
        yAxis: [
          {
            type: "value"
          }
        ]
      }
    };
  },
  // 组件创建时执行
  created() {},
  // 当组件渲染完成时执行
  async mounted() {
    // 3. 基于准备好的dom，初始化echarts实例
    var myChart = echarts.init(document.getElementById("main"));

    // 获取折线数据
    const { data: res } = await this.$http.get("reports/type/1");

    if (res.meta.status !== 200) {
      return this.$message.error("折线数据获取失败");
    }

    // 4. 准备数据和配置项
    var option = {
      title: {
        text: "ECharts 入门示例"
      },
      tooltip: {},
      legend: {
        data: ["销量"]
      },
      xAxis: {
        data: ["衬衫", "羊毛衫", "雪纺衫", "裤子", "高跟鞋", "袜子"]
      },
      yAxis: {},
      series: [
        {
          name: "销量",
          type: "bar",
          data: [5, 20, 36, 10, 10, 20]
        }
      ]
    };

    // 合并两个对象
    const result = _.merge(res.data, this.options)

    // 5.使用刚指定的配置项和数据显示图表。
    myChart.setOption(result);

  },
  methods: {}
};
</script>
<style lang="less" scoped>
canvas{
    width: 800px !important;
}
</style>